diff --git a/src/resources/responses/responses.ts b/src/resources/responses/responses.ts
index a443f101a..ba6feec12 100644
--- a/src/resources/responses/responses.ts
+++ b/src/resources/responses/responses.ts
@@ -3480,7 +3480,7 @@ export interface ResponseOutputTextAnnotationAddedEvent {
   /**
    * The type of the event. Always 'response.output_text_annotation.added'.
    */
-  type: 'response.output_text_annotation.added';
+  type: 'response.output_text.annotation.added';
 }
 
 /**